Transmission configurations in full duplex mode

ABSTRACT

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from a base station, control information that indicates at least two transmission configuration indicator (TCI) states. A first TCI state of the at least two TCI states is associated with a half duplex mode of the UE, and a second TCI state of the at least two TCI states is associated with a full duplex mode of the UE. The UE may further receive, from the base station, a downlink transmission according to at least one of the first TCI state or the second TCI state. Numerous other aspects are provided.

CROSS-REFERENCE TO RELATED APPLICATION

This Patent application claims priority to U.S. Provisional PatentApplication No. 63/044,181, filed on Jun. 25, 2020, entitled“TRANSMISSION CONFIGURATIONS IN FULL DUPLEX MODE,” and assigned to theassignee hereof. The disclosure of the prior Application is consideredpart of and is incorporated by reference in this Patent Application.

FIELD OF THE DISCLOSURE

Aspects of the present disclosure generally relate to wirelesscommunication and to techniques and apparatuses for activating and usingtransmission configurations for a full duplex mode.

BACKGROUND

Wireless communication systems are widely deployed to provide varioustelecommunication services such as telephony, video, data, messaging,and broadcasts. Typical wireless communication systems may employmultiple-access technologies capable of supporting communication withmultiple users by sharing available system resources (e.g., bandwidth,transmit power, or the like). Examples of such multiple-accesstechnologies include code division multiple access (CDMA) systems, timedivision multiple access (TDMA) systems, frequency-division multipleaccess (FDMA) systems, orthogonal frequency-division multiple access(OFDMA) systems, single-carrier frequency-division multiple access(SC-FDMA) systems, time division synchronous code division multipleaccess (TD-SCDMA) systems, and Long Term Evolution (LTE).LTE/LTE-Advanced is a set of enhancements to the Universal MobileTelecommunications System (UMTS) mobile standard promulgated by theThird Generation Partnership Project (3GPP).

A wireless network may include a number of base stations (BSs) that cansupport communication for a number of user equipment (UEs). A UE maycommunicate with a BS via the downlink and uplink. “Downlink” (orforward link) refers to the communication link from the BS to the UE,and “uplink” (or reverse link) refers to the communication link from theUE to the BS. As will be described in more detail herein, a BS may bereferred to as a Node B, a gNB, an access point (AP), a radio head, atransmit-receive point (TRP), a New Radio (NR) BS, a 5G Node B, or thelike.

The above multiple access technologies have been adopted in varioustelecommunication standards to provide a common protocol that enablesdifferent user equipment to communicate on a municipal, national,regional, and even global level. NR, which may also be referred to as5G, is a set of enhancements to the LTE mobile standard promulgated bythe 3GPP. NR is designed to better support mobile broadband Internetaccess by improving spectral efficiency, lowering costs, improvingservices, making use of new spectrum, and better integrating with otheropen standards using orthogonal frequency division multiplexing (OFDM)with a cyclic prefix (CP) (CP-OFDM) on the downlink (DL), using CP-OFDMand/or SC-FDM (e.g., also known as discrete Fourier transform spreadOFDM (DFT-s-OFDM)) on the uplink (UL), as well as supportingbeamforming, multiple-input multiple-output (MIMO) antenna technology,and carrier aggregation. As the demand for mobile broadband accesscontinues to increase, further improvements in LTE, NR, and other radioaccess technologies remain useful.

SUMMARY

In some aspects, a method of wireless communication performed by a userequipment (UE) includes receiving, from a base station, controlinformation that indicates at least two transmission configurationindicator (TCI) states, wherein a first TCI state of the at least twoTCI states is associated with a half duplex mode of the UE, and a secondTCI state of the at least two TCI states is associated with a fullduplex mode of the UE; and receiving, from the base station, a downlinktransmission according to at least one of the first TCI state or thesecond TCI state.

In some aspects, a method of wireless communication performed by a basestation includes transmitting, to a UE, control information thatindicates at least two TCI states, wherein a first TCI state of the atleast two TCI states is associated with a half duplex mode of the UE,and a second TCI state of the at least two TCI states is associated witha full duplex mode of the UE; and transmitting, to the UE, a downlinktransmission according to the first TCI state or the second TCI state.

In some aspects, a non-transitory computer-readable medium storing a setof instructions for wireless communication includes one or moreinstructions that, when executed by one or more processors of a UE,cause the UE to receive, from a base station, control information thatindicates at least two TCI states, wherein a first TCI state of the atleast two TCI states is associated with a half duplex mode of the UE,and a second TCI state of the at least two TCI states is associated witha full duplex mode of the UE; and receive, from the base station, adownlink transmission according to at least one of the first TCI stateor the second TCI state.

In some aspects, a non-transitory computer-readable medium storing a setof instructions for wireless communication includes one or moreinstructions that, when executed by one or more processors of a basestation, cause the base station to transmit, to a UE, controlinformation that indicates at least two TCI states, wherein a first TCIstate of the at least two TCI states is associated with a half duplexmode of the UE, and a second TCI state of the at least two TCI states isassociated with a full duplex mode of the UE; and transmit, to the UE, adownlink transmission according to the first TCI state or the second TCIstate.

In some aspects, a UE for wireless communication includes a memory andone or more processors coupled to the memory, the memory and the one ormore processors configured to receive, from a base station, controlinformation that indicates at least two TCI states, wherein a first TCIstate of the at least two TCI states is associated with a half duplexmode of the UE, and a second TCI state of the at least two TCI states isassociated with a full duplex mode of the UE; and receive, from the basestation, a downlink transmission according to at least one of the firstTCI state or the second TCI state.

In some aspects, a base station for wireless communication includes amemory and one or more processors coupled to the memory, the memory andthe one or more processors configured to transmit, to a UE, controlinformation that indicates at least two TCI states, wherein a first TCIstate of the at least two TCI states is associated with a half duplexmode of the UE, and a second TCI state of the at least two TCI states isassociated with a full duplex mode of the UE; and transmit, to the UE, adownlink transmission according to the first TCI state or the second TCIstate.

In some aspects, an apparatus for wireless communication includes meansfor receiving, from a base station, control information that indicatesat least two TCI states, wherein a first TCI state of the at least twoTCI states is associated with a half duplex mode of the apparatus, and asecond TCI state of the at least two TCI states is associated with afull duplex mode of the apparatus; and means for receiving, from thebase station, a downlink transmission according to at least one of thefirst TCI state or the second TCI state.

In some aspects, an apparatus for wireless communication includes meansfor transmitting, to a UE, control information that indicates at leasttwo TCI states, wherein a first TCI state of the at least two TCI statesis associated with a half duplex mode of the UE, and a second TCI stateof the at least two TCI states is associated with a full duplex mode ofthe UE; and means for transmitting, to the UE, a downlink transmissionaccording to the first TCI state or the second TCI state.

Aspects generally include a method, apparatus, system, computer programproduct, non-transitory computer-readable medium, user equipment, basestation, wireless communication device, and/or processing system assubstantially described herein with reference to and as illustrated bythe drawings and specification.

The foregoing has outlined rather broadly the features and technicaladvantages of examples according to the disclosure in order that thedetailed description that follows may be better understood. Additionalfeatures and advantages will be described hereinafter. The conceptionand specific examples disclosed may be readily utilized as a basis formodifying or designing other structures for carrying out the samepurposes of the present disclosure. Such equivalent constructions do notdepart from the scope of the appended claims. Characteristics of theconcepts disclosed herein, both their organization and method ofoperation, together with associated advantages will be better understoodfrom the following description when considered in connection with theaccompanying figures. Each of the figures is provided for the purposesof illustration and description, and not as a definition of the limitsof the claims.

While aspects are described in the present disclosure by illustration tosome examples, those skilled in the art will understand that suchaspects may be implemented in many different arrangements and scenarios.Techniques described herein may be implemented using different platformtypes, devices, systems, shapes, sizes, and/or packaging arrangements.For example, some aspects may be implemented via integrated chipembodiments or other non-module-component based devices (e.g., end-userdevices, vehicles, communication devices, computing devices, industrialequipment, retail/purchasing devices, medical devices, or artificialintelligence-enabled devices). Aspects may be implemented in chip-levelcomponents, modular components, non-modular components, non-chip-levelcomponents, device-level components, or system-level components. Devicesincorporating described aspects and features may include additionalcomponents and features for implementation and practice of claimed anddescribed aspects. For example, transmission and reception of wirelesssignals may include a number of components for analog and digitalpurposes (e.g., hardware components including antennas, radio frequency(RF) chains, power amplifiers, modulators, buffers, processors,interleavers, adders, or summers). It is intended that aspects describedherein may be practiced in a wide variety of devices, components,systems, distributed arrangements, or end-user devices of varying size,shape, and constitution.

BRIEF DESCRIPTION OF THE DRAWINGS

So that the above-recited features of the present disclosure can beunderstood in detail, a more particular description, briefly summarizedabove, may be had by reference to aspects, some of which are illustratedin the appended drawings. It is to be noted, however, that the appendeddrawings illustrate only certain typical aspects of this disclosure andare therefore not to be considered limiting of its scope, for thedescription may admit to other equally effective aspects. The samereference numbers in different drawings may identify the same or similarelements.

FIG. 1 is a diagram illustrating an example of a wireless network, inaccordance with the present disclosure.

FIG. 2 is a diagram illustrating an example of a base station incommunication with a user equipment (UE) in a wireless network, inaccordance with the present disclosure.

FIG. 3 is a diagram illustrating an example of a beamformingarchitecture that supports beamforming for millimeter wave (mmW)communications, in accordance with the present disclosure.

FIGS. 4A, 4B, 4C, and 4D are diagrams illustrating examples of fullduplex communication, in accordance with the present disclosure.

FIGS. 5A, 5B, and 5C are diagrams illustrating examples of overlappingor neighboring symbols in full duplex communication, in accordance withthe present disclosure.

FIG. 6 is a diagram illustrating an example of activating and usingtransmission configuration indicator (TCI) states for a full duplexmode, in accordance with the present disclosure.

FIG. 7 is a diagram illustrating an example process performed by a UE,in accordance with the present disclosure.

FIG. 8 is a diagram illustrating an example process performed by a basestation, in accordance with the present disclosure.

DETAILED DESCRIPTION

Various aspects of the disclosure are described more fully hereinafterwith reference to the accompanying drawings. This disclosure may,however, be embodied in many different forms and should not be construedas limited to any specific structure or function presented throughoutthis disclosure. Rather, these aspects are provided so that thisdisclosure will be thorough and complete, and will fully convey thescope of the disclosure to those skilled in the art. Based on theteachings herein, one skilled in the art should appreciate that thescope of the disclosure is intended to cover any aspect of thedisclosure disclosed herein, whether implemented independently of orcombined with any other aspect of the disclosure. For example, anapparatus may be implemented or a method may be practiced using anynumber of the aspects set forth herein. In addition, the scope of thedisclosure is intended to cover such an apparatus or method which ispracticed using other structure, functionality, or structure andfunctionality in addition to or other than the various aspects of thedisclosure set forth herein. It should be understood that any aspect ofthe disclosure disclosed herein may be embodied by one or more elementsof a claim.

Several aspects of telecommunication systems will now be presented withreference to various apparatuses and techniques. These apparatuses andtechniques will be described in the following detailed description andillustrated in the accompanying drawings by various blocks, modules,components, circuits, steps, processes, algorithms, or the like(collectively referred to as “elements”). These elements may beimplemented using hardware, software, or combinations thereof. Whethersuch elements are implemented as hardware or software depends upon theparticular application and design constraints imposed on the overallsystem.

It should be noted that while aspects may be described herein usingterminology commonly associated with a 5G or NR radio access technology(RAT), aspects of the present disclosure can be applied to other RATs,such as a 3G RAT, a 4G RAT, and/or a RAT subsequent to 5G (e.g., 6G).

FIG. 1 is a diagram illustrating an example of a wireless network 100,in accordance with the present disclosure. The wireless network 100 maybe or may include elements of a 5G (NR) network and/or an LTE network,among other examples. The wireless network 100 may include a number ofbase stations 110 (shown as BS 110 a, BS 110 b, BS 110 c, and BS 110 d)and other network entities. A base station (BS) is an entity thatcommunicates with user equipment (UEs) and may also be referred to as anNR BS, a Node B, a gNB, a 5G node B (NB), an access point, a TRP, or thelike. Each BS may provide communication coverage for a particulargeographic area. In 3GPP, the term “cell” can refer to a coverage areaof a BS and/or a BS subsystem serving this coverage area, depending onthe context in which the term is used.

A BS may provide communication coverage for a macro cell, a pico cell, afemto cell, and/or another type of cell. A macro cell may cover arelatively large geographic area (e.g., several kilometers in radius)and may allow unrestricted access by UEs with service subscription. Apico cell may cover a relatively small geographic area and may allowunrestricted access by UEs with service subscription. A femto cell maycover a relatively small geographic area (e.g., a home) and may allowrestricted access by UEs having association with the femto cell (e.g.,UEs in a closed subscriber group (CSG)). A BS for a macro cell may bereferred to as a macro BS. A BS for a pico cell may be referred to as apico BS. A BS for a femto cell may be referred to as a femto BS or ahome BS. In the example shown in FIG. 1, a BS 110 a may be a macro BSfor a macro cell 102 a, a BS 110 b may be a pico BS for a pico cell 102b, and a BS 110 c may be a femto BS for a femto cell 102 c. A BS maysupport one or multiple (e.g., three) cells. The terms “eNB”, “basestation”, “NR BS”, “gNB”, “TRP”, “AP”, “node B”, “5G NB”, and “cell” maybe used interchangeably herein.

In some aspects, a cell may not necessarily be stationary, and thegeographic area of the cell may move according to the location of amobile BS. In some aspects, the BSs may be interconnected to one anotherand/or to one or more other BSs or network nodes (not shown) in thewireless network 100 through various types of backhaul interfaces, suchas a direct physical connection or a virtual network, using any suitabletransport network.

Wireless network 100 may also include relay stations. A relay station isan entity that can receive a transmission of data from an upstreamstation (e.g., a BS or a UE) and send a transmission of the data to adownstream station (e.g., a UE or a BS). A relay station may also be aUE that can relay transmissions for other UEs. In the example shown inFIG. 1, a relay BS 110 d may communicate with macro BS 110 a and a UE120 d in order to facilitate communication between BS 110 a and UE 120d. A relay BS may also be referred to as a relay station, a relay basestation, a relay, or the like.

Wireless network 100 may be a heterogeneous network that includes BSs ofdifferent types, such as macro BSs, pico BSs, femto BSs, relay BSs, orthe like. These different types of BSs may have different transmit powerlevels, different coverage areas, and different impacts on interferencein wireless network 100. For example, macro BSs may have a high transmitpower level (e.g., 5 to 40 watts) whereas pico BSs, femto BSs, and relayBSs may have lower transmit power levels (e.g., 0.1 to 2 watts).

A network controller 130 may couple to a set of BSs and may providecoordination and control for these BSs. Network controller 130 maycommunicate with the BSs via a backhaul. The BSs may also communicatewith one another, e.g., directly or indirectly via a wireless orwireline backhaul.

UEs 120 (e.g., 120 a, 120 b, 120 c) may be dispersed throughout wirelessnetwork 100, and each UE may be stationary or mobile. A UE may also bereferred to as an access terminal, a terminal, a mobile station, asubscriber unit, a station, or the like. A UE may be a cellular phone(e.g., a smart phone), a personal digital assistant (PDA), a wirelessmodem, a wireless communication device, a handheld device, a laptopcomputer, a cordless phone, a wireless local loop (WLL) station, atablet, a camera, a gaming device, a netbook, a smartbook, an ultrabook,a medical device or equipment, biometric sensors/devices, wearabledevices (smart watches, smart clothing, smart glasses, smart wristbands, smart jewelry (e.g., smart ring, smart bracelet)), anentertainment device (e.g., a music or video device, or a satelliteradio), a vehicular component or sensor, smart meters/sensors,industrial manufacturing equipment, a global positioning system device,or any other suitable device that is configured to communicate via awireless or wired medium.

Some UEs may be considered machine-type communication (MTC) or evolvedor enhanced machine-type communication (eMTC) UEs. MTC and eMTC UEsinclude, for example, robots, drones, remote devices, sensors, meters,monitors, and/or location tags, that may communicate with a basestation, another device (e.g., remote device), or some other entity. Awireless node may provide, for example, connectivity for or to a network(e.g., a wide area network such as Internet or a cellular network) via awired or wireless communication link. Some UEs may be consideredInternet-of-Things (IoT) devices, and/or may be implemented as NB-IoT(narrowband internet of things) devices. Some UEs may be considered aCustomer Premises Equipment (CPE). UE 120 may be included inside ahousing that houses components of UE 120, such as processor componentsand/or memory components. In some aspects, the processor components andthe memory components may be coupled together. For example, theprocessor components (e.g., one or more processors) and the memorycomponents (e.g., a memory) may be operatively coupled, communicativelycoupled, electronically coupled, and/or electrically coupled.

In general, any number of wireless networks may be deployed in a givengeographic area. Each wireless network may support a particular RAT andmay operate on one or more frequencies. A RAT may also be referred to asa radio technology, an air interface, or the like. A frequency may alsobe referred to as a carrier, a frequency channel, or the like. Eachfrequency may support a single RAT in a given geographic area in orderto avoid interference between wireless networks of different RATs. Insome cases, NR or 5G RAT networks may be deployed.

In some aspects, two or more UEs 120 (e.g., shown as UE 120 a and UE 120e) may communicate directly using one or more sidelink channels (e.g.,without using a base station 110 as an intermediary to communicate withone another). For example, the UEs 120 may communicate usingpeer-to-peer (P2P) communications, device-to-device (D2D)communications, a vehicle-to-everything (V2X) protocol (e.g., which mayinclude a vehicle-to-vehicle (V2V) protocol or avehicle-to-infrastructure (V2I) protocol), and/or a mesh network. Inthis case, the UE 120 may perform scheduling operations, resourceselection operations, and/or other operations described elsewhere hereinas being performed by the base station 110.

Devices of wireless network 100 may communicate using theelectromagnetic spectrum, which may be subdivided based on frequency orwavelength into various classes, bands, channels, or the like. Forexample, devices of wireless network 100 may communicate using anoperating band having a first frequency range (FR1), which may span from410 MHz to 7.125 GHz, and/or may communicate using an operating bandhaving a second frequency range (FR2), which may span from 24.25 GHz to52.6 GHz. The frequencies between FR1 and FR2 are sometimes referred toas mid-band frequencies. Although a portion of FR1 is greater than 6GHz, FR1 is often referred to as a “sub-6 GHz” band. Similarly, FR2 isoften referred to as a “millimeter wave” band despite being differentfrom the extremely high frequency (EHF) band (30 GHz-300 GHz) which isidentified by the International Telecommunications Union (ITU) as a“millimeter wave” band. Thus, unless specifically stated otherwise, itshould be understood that the term “sub-6 GHz” or the like, if usedherein, may broadly represent frequencies less than 6 GHz, frequencieswithin FR1, and/or mid-band frequencies (e.g., greater than 7.125 GHz).Similarly, unless specifically stated otherwise, it should be understoodthat the term “millimeter wave” or the like, if used herein, may broadlyrepresent frequencies within the EHF band, frequencies within FR2,and/or mid-band frequencies (e.g., less than 24.25 GHz). It iscontemplated that the frequencies included in FR1 and FR2 may bemodified, and techniques described herein are applicable to thosemodified frequency ranges.

As indicated above, FIG. 1 is provided as an example. Other examples maydiffer from what is described with regard to FIG. 1.

FIG. 2 is a diagram illustrating an example 200 of a base station 110 incommunication with a UE 120 in a wireless network 100, in accordancewith the present disclosure. Base station 110 may be equipped with Tantennas 234 a through 234 t, and UE 120 may be equipped with R antennas252 a through 252 r, where in general T≥1 and R≥1.

At base station 110, a transmit processor 220 may receive data from adata source 212 for one or more UEs, select one or more modulation andcoding schemes (MCS) for each UE based at least in part on channelquality indicators (CQIs) received from the UE, process (e.g., encodeand modulate) the data for each UE based at least in part on the MCS(s)selected for the UE, and provide data symbols for all UEs. Transmitprocessor 220 may also process system information (e.g., for semi-staticresource partitioning information (SRPI)) and control information (e.g.,CQI requests, grants, and/or upper layer signaling) and provide overheadsymbols and control symbols. Transmit processor 220 may also generatereference symbols for reference signals (e.g., a cell-specific referencesignal (CRS) or a demodulation reference signal (DMRS)) andsynchronization signals (e.g., a primary synchronization signal (PSS) ora secondary synchronization signal (SSS)). A transmit (TX)multiple-input multiple-output (MIMO) processor 230 may perform spatialprocessing (e.g., precoding) on the data symbols, the control symbols,the overhead symbols, and/or the reference symbols, if applicable, andmay provide T output symbol streams to T modulators (MODs) 232 a through232 t. Each modulator 232 may process a respective output symbol stream(e.g., for OFDM) to obtain an output sample stream. Each modulator 232may further process (e.g., convert to analog, amplify, filter, andupconvert) the output sample stream to obtain a downlink signal. Tdownlink signals from modulators 232 a through 232 t may be transmittedvia T antennas 234 a through 234 t, respectively.

At UE 120, antennas 252 a through 252 r may receive the downlink signalsfrom base station 110 and/or other base stations and may providereceived signals to demodulators (DEMODs) 254 a through 254 r,respectively. Each demodulator 254 may condition (e.g., filter, amplify,downconvert, and digitize) a received signal to obtain input samples.Each demodulator 254 may further process the input samples (e.g., forOFDM) to obtain received symbols. A MIMO detector 256 may obtainreceived symbols from all R demodulators 254 a through 254 r, performMIMO detection on the received symbols if applicable, and providedetected symbols. A receive processor 258 may process (e.g., demodulateand decode) the detected symbols, provide decoded data for UE 120 to adata sink 260, and provide decoded control information and systeminformation to a controller/processor 280. The term“controller/processor” may refer to one or more controllers, one or moreprocessors, or a combination thereof. A channel processor may determinea reference signal received power (RSRP) parameter, a received signalstrength indicator (RSSI) parameter, a reference signal received quality(RSRQ) parameter, and/or a CQI parameter, among other examples. In someaspects, one or more components of UE 120 may be included in a housing284.

Network controller 130 may include communication unit 294,controller/processor 290, and memory 292. Network controller 130 mayinclude, for example, one or more devices in a core network. Networkcontroller 130 may communicate with base station 110 via communicationunit 294.

Antennas (e.g., antennas 234 a through 234 t and/or antennas 252 athrough 252 r) may include, or may be included within, one or moreantenna panels, antenna groups, sets of antenna elements, and/or antennaarrays, among other examples. An antenna panel, an antenna group, a setof antenna elements, and/or an antenna array may include one or moreantenna elements. An antenna panel, an antenna group, a set of antennaelements, and/or an antenna array may include a set of coplanar antennaelements and/or a set of non-coplanar antenna elements. An antennapanel, an antenna group, a set of antenna elements, and/or an antennaarray may include antenna elements within a single housing and/orantenna elements within multiple housings. An antenna panel, an antennagroup, a set of antenna elements, and/or an antenna array may includeone or more antenna elements coupled to one or more transmission and/orreception components, such as one or more components of FIG. 2.

On the uplink, at UE 120, a transmit processor 264 may receive andprocess data from a data source 262 and control information (e.g., forreports that include RSRP, RSSI, RSRQ, and/or CQI) fromcontroller/processor 280. Transmit processor 264 may also generatereference symbols for one or more reference signals. The symbols fromtransmit processor 264 may be precoded by a TX MIMO processor 266 ifapplicable, further processed by modulators 254 a through 254 r (e.g.,for DFT-s-OFDM or CP-OFDM), and transmitted to base station 110. In someaspects, a modulator and a demodulator (e.g., MOD/DEMOD 254) of the UE120 may be included in a modem of the UE 120. In some aspects, the UE120 includes a transceiver. The transceiver may include any combinationof antenna(s) 252, modulators and/or demodulators 254, MIMO detector256, receive processor 258, transmit processor 264, and/or TX MIMOprocessor 266. The transceiver may be used by a processor (e.g.,controller/processor 280) and memory 282 to perform aspects of any ofthe methods described herein (for example, with reference to FIGS.5A-8).

At base station 110, the uplink signals from UE 120 and other UEs may bereceived by antennas 234, processed by demodulators 232, detected by aMIMO detector 236 if applicable, and further processed by a receiveprocessor 238 to obtain decoded data and control information sent by UE120. Receive processor 238 may provide the decoded data to a data sink239 and the decoded control information to controller/processor 240.Base station 110 may include communication unit 244 and communicate tonetwork controller 130 via communication unit 244. Base station 110 mayinclude a scheduler 246 to schedule UEs 120 for downlink and/or uplinkcommunications. In some aspects, a modulator and a demodulator (e.g.,MOD/DEMOD 232) of the base station 110 may be included in a modem of thebase station 110. In some aspects, the base station 110 includes atransceiver. The transceiver may include any combination of antenna(s)234, modulators and/or demodulators 232, MIMO detector 236, receiveprocessor 238, transmit processor 220, and/or TX MIMO processor 230. Thetransceiver may be used by a processor (e.g., controller/processor 240)and memory 242 to perform aspects of any of the methods described herein(for example, with reference to FIGS. 5A-8).

Controller/processor 240 of base station 110, controller/processor 280of UE 120, and/or any other component(s) of FIG. 2 may perform one ormore techniques associated with activating and using transmissionconfigurations for a full duplex mode, as described in more detailelsewhere herein. For example, controller/processor 240 of base station110, controller/processor 280 of UE 120, and/or any other component(s)of FIG. 2 may perform or direct operations of, for example, process 700of FIG. 7, process 800 of FIG. 8, and/or other processes as describedherein. Memories 242 and 282 may store data and program codes for basestation 110 and UE 120, respectively. In some aspects, memory 242 and/ormemory 282 may include a non-transitory computer-readable medium storingone or more instructions (e.g., code and/or program code) for wirelesscommunication. For example, the one or more instructions, when executed(e.g., directly, or after compiling, converting, and/or interpreting) byone or more processors of the base station 110 and/or the UE 120, maycause the one or more processors, the UE 120, and/or the base station110 to perform or direct operations of, for example, process 700 of FIG.7, process 800 of FIG. 8, and/or other processes as described herein. Insome aspects, executing instructions may include running theinstructions, converting the instructions, compiling the instructions,and/or interpreting the instructions, among other examples.

In some aspects, a UE (e.g., the UE 120) may include means forreceiving, from a base station (e.g., the base station 110), controlinformation that indicates at least two TCI states, wherein a first TCIstate of the at least two TCI states is associated with a half duplexmode of the UE, and a second TCI state of the at least two TCI states isassociated with a full duplex mode of the UE; and/or means forreceiving, from the base station, a downlink transmission according toat least one of the first TCI state or the second TCI state. The meansfor the UE to perform operations described herein may include, forexample, one or more of antenna 252, demodulator 254, MIMO detector 256,receive processor 258, transmit processor 264, TX MIMO processor 266,modulator 254, controller/processor 280, or memory 282.

In some aspects, a base station (e.g., the base station 110) may includemeans for transmitting, to a UE (e.g., the UE 120), control informationthat indicates at least two TCI states, wherein a first TCI state of theat least two TCI states is associated with a half duplex mode of the UE,and a second TCI state of the at least two TCI states is associated witha full duplex mode of the UE; and/or means for transmitting, to the UE,a downlink transmission according to the first TCI state or the secondTCI state. The means for the base station to perform operationsdescribed herein may include, for example, one or more of transmitprocessor 220, TX MIMO processor 230, modulator 232, antenna 234,demodulator 232, MIMO detector 236, receive processor 238,controller/processor 240, memory 242, or scheduler 246.

While blocks in FIG. 2 are illustrated as distinct components, thefunctions described above with respect to the blocks may be implementedin a single hardware, software, or combination component or in variouscombinations of components. For example, the functions described withrespect to the transmit processor 264, the receive processor 258, and/orthe TX MIMO processor 266 may be performed by or under the control ofcontroller/processor 280.

As indicated above, FIG. 2 is provided as an example. Other examples maydiffer from what is described with regard to FIG. 2.

FIG. 3 is a diagram illustrating an example beamforming architecture 300that supports beamforming for mmW communications, in accordance with thepresent disclosure. In some aspects, architecture 300 may implementaspects of wireless network 100. In some aspects, architecture 300 maybe implemented in a transmitting device (e.g., a first wirelesscommunication device, UE, or base station) and/or a receiving device(e.g., a second wireless communication device, UE, or base station), asdescribed herein.

Broadly, FIG. 3 is a diagram illustrating example hardware components ofa wireless communication device in accordance with certain aspects ofthe disclosure. The illustrated components may include those that may beused for antenna element selection and/or for beamforming fortransmission of wireless signals. There are numerous architectures forantenna element selection and implementing phase shifting, only oneexample of which is illustrated here. The architecture 300 includes amodem (modulator/demodulator) 302, a digital to analog converter (DAC)304, a first mixer 306, a second mixer 308, and a splitter 310. Thearchitecture 300 also includes multiple first amplifiers 312, multiplephase shifters 314, multiple second amplifiers 316, and an antenna array318 that includes multiple antenna elements 320.

Transmission lines or other waveguides, wires, and/or traces are shownconnecting the various components to illustrate how signals to betransmitted may travel between components. Reference numbers 322, 324,326, and 328 indicate regions in the architecture 300 in which differenttypes of signals travel or are processed. Specifically, reference number322 indicates a region in which digital baseband signals travel or areprocessed, reference number 324 indicates a region in which analogbaseband signals travel or are processed, reference number 326 indicatesa region in which analog intermediate frequency (IF) signals travel orare processed, and reference number 328 indicates a region in whichanalog radio frequency (RF) signals travel or are processed. Thearchitecture also includes a local oscillator A 330, a local oscillatorB 332, and a controller/processor 334. In some aspects,controller/processor 334 corresponds to controller/processor 240 of thebase station described above in connection with FIG. 2 and/orcontroller/processor 280 of the UE described above in connection withFIG. 2.

Each of the antenna elements 320 may include one or more sub-elementsfor radiating or receiving RF signals. For example, a single antennaelement 320 may include a first sub-element cross-polarized with asecond sub-element that can be used to independently transmitcross-polarized signals. The antenna elements 320 may include patchantennas, dipole antennas, or other types of antennas arranged in alinear pattern, a two dimensional pattern, or another pattern. A spacingbetween antenna elements 320 may be such that signals with a desiredwavelength transmitted separately by the antenna elements 320 mayinteract or interfere (e.g., to form a desired beam). For example, givenan expected range of wavelengths or frequencies, the spacing may providea quarter wavelength, half wavelength, or other fraction of a wavelengthof spacing between neighboring antenna elements 320 to allow forinteraction or interference of signals transmitted by the separateantenna elements 320 within that expected range.

The modem 302 processes and generates digital baseband signals and mayalso control operation of the DAC 304, first and second mixers 306 and308, splitter 310, first amplifiers 312, phase shifters 314, and/or thesecond amplifiers 316 to transmit signals via one or more or all of theantenna elements 320. The modem 302 may process signals and controloperation in accordance with a communication standard such as a wirelessstandard discussed herein. The DAC 304 may convert digital basebandsignals received from the modem 302 (and that are to be transmitted)into analog baseband signals. The first mixer 306 upconverts analogbaseband signals to analog IF signals within an IF using a localoscillator A 330. For example, the first mixer 306 may mix the signalswith an oscillating signal generated by the local oscillator A 330 to“move” the baseband analog signals to the IF. In some cases, someprocessing or filtering (not shown) may take place at the IF. The secondmixer 308 upconverts the analog IF signals to analog RF signals usingthe local oscillator B 332. Similar to the first mixer, the second mixer308 may mix the signals with an oscillating signal generated by thelocal oscillator B 332 to “move” the IF analog signals to the RF or thefrequency at which signals will be transmitted or received. The modem302 and/or the controller/processor 334 may adjust the frequency oflocal oscillator A 330 and/or the local oscillator B 332 so that adesired IF and/or RF frequency is produced and used to facilitateprocessing and transmission of a signal within a desired bandwidth.

In the illustrated architecture 300, signals upconverted by the secondmixer 308 are split or duplicated into multiple signals by the splitter310. The splitter 310 in architecture 300 splits the RF signal intomultiple identical or nearly identical RF signals. In other examples,the split may take place with any type of signal, including withbaseband digital, baseband analog, or IF analog signals. Each of thesesignals may correspond to an antenna element 320, and the signal travelsthrough and is processed by amplifiers 312 and 316, phase shifters 314,and/or other elements corresponding to the respective antenna element320 to be provided to and transmitted by the corresponding antennaelement 320 of the antenna array 318. In one example, the splitter 310may be an active splitter that is connected to a power supply andprovides some gain so that RF signals exiting the splitter 310 are at apower level equal to or greater than the signal entering the splitter310. In another example, the splitter 310 is a passive splitter that isnot connected to power supply and the RF signals exiting the splitter310 may be at a power level lower than the RF signal entering thesplitter 310.

After being split by the splitter 310, the resulting RF signals mayenter an amplifier, such as a first amplifier 312, or a phase shifter314 corresponding to an antenna element 320. The first and secondamplifiers 312 and 316, respectively, are illustrated with dashed linesbecause one or both of them might not be necessary in some aspects. Insome aspects, both the first amplifier 312 and second amplifier 316 arepresent. In some aspects, neither the first amplifier 312 nor the secondamplifier 316 is present. In some aspects, one of the two amplifiers 312and 316 is present but not the other. By way of example, if the splitter310 is an active splitter, the first amplifier 312 may not be used. Byway of further example, if the phase shifter 314 is an active phaseshifter that can provide a gain, the second amplifier 316 might not beused.

The amplifiers 312 and 316 may provide a desired level of positive ornegative gain. A positive gain (positive dB) may be used to increase anamplitude of a signal for radiation by a specific antenna element 320. Anegative gain (negative dB) may be used to decrease an amplitude and/orsuppress radiation of the signal by a specific antenna element. Each ofthe amplifiers 312 and 316 may be controlled independently (e.g., by themodem 302 or the controller/processor 334) to provide independentcontrol of the gain for each antenna element 320. For example, the modem302 and/or the controller/processor 334 may have at least one controlline connected to each of the splitter 310, first amplifiers 312, phaseshifters 314, and/or second amplifiers 316 that may be used to configurea gain to provide a desired amount of gain for each component and thuseach antenna element 320.

The phase shifter 314 may provide a configurable phase shift or phaseoffset to a corresponding RF signal to be transmitted. The phase shifter314 may be a passive phase shifter not directly connected to a powersupply. Passive phase shifters might introduce some insertion loss. Thesecond amplifier 316 may boost the signal to compensate for theinsertion loss. The phase shifter 314 may be an active phase shifterconnected to a power supply such that the active phase shifter providessome amount of gain or prevents insertion loss. The settings of each ofthe phase shifters 314 are independent, meaning that each can beindependently set to provide a desired amount of phase shift or the sameamount of phase shift or some other configuration. The modem 302 and/orthe controller/processor 334 may have at least one control lineconnected to each of the phase shifters 314 and which may be used toconfigure the phase shifters 314 to provide a desired amount of phaseshift or phase offset between antenna elements 320.

In the illustrated architecture 300, RF signals received by the antennaelements 320 are provided to one or more first amplifiers 356 to boostthe signal strength. The first amplifiers 356 may be connected to thesame antenna arrays 318 (e.g., for time division duplex (TDD)operations). The first amplifiers 356 may be connected to differentantenna arrays 318. The boosted RF signal is input into one or morephase shifters 354 to provide a configurable phase shift or phase offsetfor the corresponding received RF signal to enable reception via one ormore Rx beams. The phase shifter 354 may be an active phase shifter or apassive phase shifter. The settings of the phase shifters 354 areindependent, meaning that each can be independently set to provide adesired amount of phase shift or the same amount of phase shift or someother configuration. The modem 302 and/or the controller/processor 334may have at least one control line connected to each of the phaseshifters 354 and which may be used to configure the phase shifters 354to provide a desired amount of phase shift or phase offset betweenantenna elements 320 to enable reception via one or more Rx beams.

The outputs of the phase shifters 354 may be input to one or more secondamplifiers 352 for signal amplification of the phase shifted received RFsignals. The second amplifiers 352 may be individually configured toprovide a configured amount of gain. The second amplifiers 352 may beindividually configured to provide an amount of gain to ensure that thesignals input to combiner 350 have the same magnitude. The amplifiers352 and/or 356 are illustrated in dashed lines because they might not benecessary in some aspects. In some aspects, both the amplifier 352 andthe amplifier 356 are present. In another aspect, neither the amplifier352 nor the amplifier 356 are present. In other aspects, one of theamplifiers 352 and 356 is present but not the other.

In the illustrated architecture 300, signals output by the phaseshifters 354 (via the amplifiers 352 when present) are combined incombiner 350. The combiner 350 in architecture 300 combines the RFsignal into a signal. The combiner 350 may be a passive combiner (e.g.,not connected to a power source), which may result in some insertionloss. The combiner 350 may be an active combiner (e.g., connected to apower source), which may result in some signal gain. When combiner 350is an active combiner, it may provide a different (e.g., configurable)amount of gain for each input signal so that the input signals have thesame magnitude when they are combined. When combiner 350 is an activecombiner, the combiner 350 may not need the second amplifier 352 becausethe active combiner may provide the signal amplification.

The output of the combiner 350 is input into mixers 348 and 346. Mixers348 and 346 generally down convert the received RF signal using inputsfrom local oscillators 372 and 370, respectively, to create intermediateor baseband signals that carry the encoded and modulated information.The output of the mixers 348 and 346 are input into an analog-to-digitalconverter (ADC) 344 for conversion to analog signals. The analog signalsoutput from ADC 344 is input to modem 302 for baseband processing, suchas decoding, de-interleaving, or similar operations.

The architecture 300 is given by way of example only to illustrate anarchitecture for transmitting and/or receiving signals. In some cases,the architecture 300 and/or each portion of the architecture 300 may berepeated multiple times within an architecture to accommodate or providean arbitrary number of RF chains, antenna elements, and/or antennapanels. Furthermore, numerous alternate architectures are possible andcontemplated. For example, although only a single antenna array 318 isshown, two, three, or more antenna arrays may be included, each with oneor more of their own corresponding amplifiers, phase shifters,splitters, mixers, DACs, ADCs, and/or modems. For example, a single UEmay include two, four, or more antenna arrays for transmitting orreceiving signals at different physical locations on the UE or indifferent directions.

Furthermore, mixers, splitters, amplifiers, phase shifters and othercomponents may be located in different signal type areas (e.g.,represented by different ones of the reference numbers 322, 324, 326,and 328) in different implemented architectures. For example, a split ofthe signal to be transmitted into multiple signals may take place at theanalog RF, analog IF, analog baseband, or digital baseband frequenciesin different examples. Similarly, amplification and/or phase shifts mayalso take place at different frequencies. For example, in some aspects,one or more of the splitter 310, amplifiers 312 and 316, or phaseshifters 314 may be located between the DAC 304 and the first mixer 306or between the first mixer 306 and the second mixer 308. In one example,the functions of one or more of the components may be combined into onecomponent. For example, the phase shifters 314 may perform amplificationto include or replace the first amplifier 312 and/or second amplifier316. By way of another example, a phase shift may be implemented by thesecond mixer 308 to obviate the need for a separate phase shifter 314.This technique is sometimes called local oscillator (LO) phase shifting.In some aspects of this configuration, there may be multiple IF to RFmixers (e.g., for each antenna element chain) within the second mixer308, and the local oscillator B 332 may supply different localoscillator signals (with different phase offsets) to each IF to RFmixer.

The modem 302 and/or the controller/processor 334 may control one ormore of the other components 304 through 372 to select one or moreantenna elements 320 and/or to form beams for transmission of one ormore signals. For example, the antenna elements 320 may be individuallyselected or deselected for transmission of a signal (or signals) bycontrolling an amplitude of one or more corresponding amplifiers, suchas the first amplifiers 312 and/or the second amplifiers 316.Beamforming includes generation of a beam using multiple signals ondifferent antenna elements, where one or more or all of the multiplesignals are shifted in phase relative to each other. The formed beam maycarry physical or higher layer reference signals or information. As eachsignal of the multiple signals is radiated from a respective antennaelement 320, the radiated signals interact, interfere (constructive anddestructive interference), and amplify each other to form a resultingbeam. The shape (such as the amplitude, width, and/or presence of sidelobes) and the direction (such as an angle of the beam relative to asurface of the antenna array 318) can be dynamically controlled bymodifying the phase shifts or phase offsets imparted by the phaseshifters 314 and amplitudes imparted by the amplifiers 312 and 316 ofthe multiple signals relative to each other. The controller/processor334 may be located partially or fully within one or more othercomponents of the architecture 300. For example, thecontroller/processor 334 may be located within the modem 302 in someaspects.

As indicated above, FIG. 3 is provided as an example. Other examples maydiffer from what is described with regard to FIG. 3.

FIGS. 4A, 4B, and 4C are diagrams illustrating examples 400, 410, and420, respectively, of full duplex communication. As shown in FIGS.4A-4C, examples 400, 410, and 420 each include one or more UEs 402 incommunication with one or more base stations (or TRPs) 404 in a wirelessnetwork that supports full duplex communication. However, it will beappreciated that the devices shown in FIGS. 4A-4C are provided by way ofexample only, and that the wireless network may support full duplexcommunication between other devices (e.g., between a mobile termination(MT) node and a control node (for example, a central unit (CU) or adistributed unit (DU)), between a child node and a parent node in anintegrated access backhaul (IAB) network, and/or between a schedulednode and a scheduling node).

As shown in FIG. 4A, example 400 includes a UE 402 in communication withtwo base stations (or TRPs) 404-1 and 404-2. As shown in FIG. 4A, the UE402 may transmit one or more uplink transmissions to base station 404-1and may concurrently receive one or more downlink transmissions frombase station 404-2. Accordingly, in the example 400 shown in FIG. 4A,full duplex communication is enabled for the UE 402, which may beoperating as a full duplex node, but not for the base stations 404-1 and404-2, which may be operating as half duplex nodes. Additionally, oralternatively, as shown in FIG. 4B, example 410 includes two UEs, UE1402-1 and UE2 402-2, in communication with a base station (or TRP) 404.In this case, the base station 404 may transmit one or more downlinktransmissions to the UE1 402-1 and may concurrently receive one or moreuplink transmissions from the UE2 402-2. Accordingly, in the example 410shown in FIG. 4B, full duplex communication is enabled for the basestation 404, which may be operating as a full duplex node, but not forthe UE1 402-1 and UE2 402-2, which may be operating as half duplexnodes. Additionally, or alternatively, as shown in FIG. 4C, example 420includes a UE 402 in communication with a base station (or TRP) 404. Inthis case, the base station 404 may transmit, and the UE 402 mayreceive, one or more downlink transmissions concurrently with the UE 402transmitting, and the base station 404 receiving, one or more uplinktransmissions. Accordingly, in the example 420 shown in FIG. 4C, fullduplex communication is enabled for both the UE 402 and the base station404, each of which is operating as a full duplex node.

Utilizing full duplex communication provides reduced latency by allowinga full duplex node to transmit or receive a downlink signal in anuplink-only slot and/or to transmit or receive an uplink signal in adownlink-only slot. In addition, full duplex communication enhancesspectral efficiency and/or network throughput (e.g., on a per celland/or per UE basis), which results in more efficient resourceutilization, by simultaneously utilizing time and frequency resourcesfor uplink and downlink communication.

As indicated above, FIGS. 4A-4C are provided as examples. Other examplesmay differ from what is described with regard to FIGS. 4A-4C.

FIG. 4D is a diagram illustrating another example 430 of full duplexcommunication. As shown in FIG. 4D, example 430 includes a UE 402 incommunication with a base station (e.g., gNB 404), or another type ofTRP, in a wireless network that supports full duplex communication(e.g., wireless network 100 of FIG. 1). However, it will be appreciatedthat the devices shown in FIG. 4D are provided by way of example only,and that the wireless network may support full duplex communicationbetween other devices (e.g., between an MT node and a control node,between a child node and a parent node in an IAB network, and/or betweena scheduled node and a scheduling node).

As shown in FIG. 4D, the UE 402 may experience self-interference (SI)between uplink communications to the gNB 404 and downlink communicationsfrom the gNB 404. Similarly, the gNB 404 may experience SI betweenuplink communications from the UE 402 and downlink communications to theUE 402. In some aspects, the SI may be caused by overlaps in time and/orfrequency between the uplink communications and downlink communications(e.g., as described below in connection with FIG. 5A). Additionally, oralternatively, the SI may be caused by little to no guard time and/orfrequency between the uplink communications and downlink communications(e.g., as described below in connection with FIGS. 5B-5C).

Accordingly, full duplex communication may be performed by selectingsuitable uplink and downlink beam pairs (e.g., transmit and receivebeams that are associated with different antenna panels of a UE and/orassociated with different antenna panels and/or TRPs of a base station)to reduce or minimize self-interference (especially clutter echo) viaspatial isolation. Accordingly, the UE 402 and/or the gNB 404 maydetermine uplink and downlink beams, that are separated on respectiveantenna panels (and/or TRPs), to provide reliable full duplexcommunication by selecting beam pairs that minimize, or at least reduce,self-interference at the UE 402 and/or the gNB 404, respectively.

Measuring self-interference at a wireless node with full duplexcapabilities may assist in determining uplink and downlink beam pairsthat support full duplex communication. For example, the UE 402 (or anIAB child node, an MT unit, and/or another similar node) may obtainself-interference measurements to determine one or more candidate uplinktransmit beams that can be paired with one or more candidate downlinkreceive beams. Additionally, or alternatively, the gNB 404 (or an IABparent node, a CU, a DU, and/or another similar node) may obtainself-interference measurements to determine one or more candidate uplinkreceive beams that can be paired with one or more candidate downlinktransmit beams. In general, to obtain the self-interferencemeasurements, a wireless node with full duplex capabilities may transmita signal from a first set of antennas (and/or TRPs) in one or moretransmit beam directions, and the wireless node may concurrently measurea received signal (e.g., a reflected or leaked transmit signal) on asecond set of antennas (and/or TRPs) in one or more receive beamdirections, where the first set of antennas may be different from or thesame as the second set of antennas.

In some situations, a UE may receive a downlink transmission (e.g., froma base station) using a transmission configuration, such as a TCI state(e.g., represented by a TCI-State data structure, as defined in 3GPPspecifications and/or another standard). For example, a base station andthe UE may be configured for beamformed communications, where the basestation may transmit in the direction of the UE using a directional BStransmit beam, and the UE may receive the transmission using adirectional UE receive beam. Each BS transmit beam may have anassociated beam ID, beam direction, or beam symbols, among otherexamples. Additionally, a downlink beam, such as a BS transmit beam or aUE receive beam, may be associated with a TCI state. A TCI state mayindicate a directionality or a characteristic of the downlink beam, suchas one or more quasi-co-location (QCL) properties of the downlink beam.For example, a QCL property may be indicated using a qcl-Type indicatorwithin a QCL-Info data structure, as defined in 3GPP specificationsand/or another standard. A QCL property may include, for example, aDoppler shift, a Doppler spread, an average delay, a delay spread, orspatial receive parameters, among other examples. In some aspects, a TCIstate may be further associated with an antenna port, an antenna panel,and/or a TRP. A TCI state may be associated with one downlink referencesignal set (for example, a synchronization signal block (SSB) and anaperiodic, periodic, or semi-persistent channel state informationreference signal (CSI-RS)) for different QCL types (for example, QCLtypes for different combinations of Doppler shift, Doppler spread,average delay, delay spread, or spatial receive parameters, among otherexamples). For example, the downlink reference signal may be indicatedusing a referenceSignal indicator, within a QCL-Info data structure, asdefined in 3GPP specifications and/or another standard. In cases wherethe QCL type indicates spatial receive parameters, the QCL type maycorrespond to analog receive beamforming parameters of a UE receive beamat the UE.

The base station may configure a set of TCI states for use on a physicaldownlink shared channel (PDSCH) as well as a subset of those TCI statesfor use on a physical downlink control channel (PDCCH). The base stationmay use radio resource configuration (RRC) messages to provide the setof TCI states for the PDSCH and/or the subset of those TCI states forthe PDCCH. For the PDSCH, the base station may transmit a medium accesscontrol (MAC) layer control element (MAC-CE) to activate a subset of theTCI states for use on the PDSCH and then schedule (e.g., using downlinkcontrol information (DCI)) a particular one of those activated TCIstates for a PDSCH message. Similarly, for the PDCCH, the base stationmay transmit a MAC-CE to activate, for a PDCCH message, one TCI statefrom the subset of the TCI states for use on the PDCCH.

The base station generally activates one TCI state per TRP at a time forthe PDCCH and similarly for the PDSCH. However, in some situations, thebase station may transmit some messages in full duplex symbols and othermessages in half duplex symbols. Accordingly, the activated TCI statemay be optimal for one of the full duplex symbols or for the half duplexsymbols yet suboptimal for another of the full duplex symbols or for thehalf duplex symbols. For example, the UE and/or the base station mayexperience increased self-interference when the activated TCI state isone that is optimal for the half duplex symbols. Accordingly, the UEwill experience lower quality and/or reliability when receiving thecorresponding messages. Additionally, the base station may consumeadditional network overhead and/or processing resources in order toretransmit those messages when the quality and/or reliability is too lowfor the UE to receive and/or successfully decode those messages.

Some techniques and apparatuses described herein enable activation ofoptimal TCI states for both messages from a base station (e.g., gNB 404)using full duplex symbols and messages from the gNB 404 using halfduplex symbols. In some aspects, techniques and apparatuses describedherein provide a UE (e.g., UE 402) with multiple activated TCI statesbased at least in part on whether a message uses full duplex symbolsand/or half duplex symbols. Accordingly, the gNB 404 improves thereliability and/or quality of full duplex communications at the UE. Inaddition, the gNB 404 conserves network overhead and processingresources by reducing a quantity of retransmissions that may be requiredwhen reliability and/or quality is lower.

As indicated above, FIG. 4D is provided as an example. Other examplesmay differ from what is described with regard to FIG. 4D.

FIGS. 5A, 5B, and 5C are diagrams illustrating examples 500, 510, and520, respectively, of overlapping or neighboring symbols in full duplexcommunication. Examples 500, 510, and 520 each include symbols depictedas areas within a time dimension and a frequency dimension. In FIGS.5A-5C, uplink communications and downlink communications use the shadedsymbols for respective uplink and downlink channels. Examples 500, 510,and 520 each show uplink symbols, including DMRS, for a physical uplinkshared channel (PUSCH), and downlink symbols, including DMRS, for aphysical downlink shared channel (PDSCH). Although the description belowwill focus on a PUSCH and a PDSCH, the description similarly applies toother channels for uplink communications and/or other channels fordownlink communications, respectively.

Examples 500, 510, and 520 each may be associated with a full duplexmode of a UE (e.g., UE 402, UE 120, and/or another network node, such asan MT unit and/or a child IAB node) and/or a base station (e.g., gNB404, base station 110, and/or another network node, such as a CU, a DU,and/or a parent IAB node). As shown in FIG. 5A, example 500 includes atleast some downlink symbols and at least some uplink symbols thatoverlap in time and frequency. Accordingly, in example 500, the UE 402may transmit and receive, in a same frequency bandwidth, concurrently.For example, the UE 402 may transmit to the gNB 404, and receive fromthe gNB 404, concurrently in one or more overlapping frequencies.

As shown in FIG. 5B, example 510 includes at least some uplink symbolsthat neighbor at least some downlink symbols in time. Although FIG. 5Bshows no guard time between the neighboring symbols, the descriptionsimilarly applies to a configuration in which at least some uplinksymbols are separated from at least some downlink symbols in time byless than a threshold amount of time. Accordingly, in example 510, theUE 402 may transmit a first set of symbols and receive a second set ofsymbols, in a same frequency bandwidth, where the first set of symbolsand the second set of symbols are separated in time with no guard timeor with a guard time less than the threshold amount of time. Forexample, the UE 402 may transmit to the gNB 404 during a first timeperiod, and receive from the gNB 404 during a second time period, in oneor more overlapping frequencies.

As shown in FIG. 5C, example 520 includes at least some uplink symbolsthat neighbor at least some downlink symbols in frequency. Although FIG.5C shows no guard band between the neighboring symbols, the descriptionsimilarly applies to a configuration in which at least some uplinksymbols are separated from at least some downlink symbols in frequencyby less than a threshold amount of frequency. Accordingly, in example520, the UE 402 may transmit a first set of symbols in a first frequencybandwidth and, concurrently, receive a second set of symbols in a secondfrequency bandwidth, where the first frequency bandwidth and the secondfrequency bandwidth are separated in frequency with no guard band orwith a guard band less than the threshold amount of frequency. Forexample, the UE 402 may, concurrently, transmit to the gNB 404 in afirst set of frequencies and receive from the gNB 404 in a second set offrequencies.

As indicated above, FIGS. 5A-5C are provided as examples. Other examplesmay differ from what is described with regard to FIGS. 5A-5C.

FIG. 6 is a diagram illustrating an example 600 of activating and usingtransmission configurations for a full duplex mode, in accordance withthe present disclosure. As shown in FIG. 6, example 600 includes a UE(e.g., UE 402, UE 120, and/or another network node, such as an MT unitand/or a child IAB node) communicating with a node (e.g., gNB 404, basestation 110, and/or another network node, such as a CU, a DU, and/or aparent IAB node). For example, the node may communicate with the UE 402on a wireless network (e.g., wireless network 100 of FIG. 1). Althoughthe description below will focus on the node being gNB 404, thedescription applies equally to another network node in communicationwith the UE 402.

In example 600, the UE 402 and/or the gNB 404 may operate in a fullduplex mode (e.g., as described above in connection with FIGS. 4A-4D).As described above in connection with FIG. 5A, the UE 402, when in thefull duplex mode, may transmit and receive, in a same frequencybandwidth, concurrently. Additionally, or alternatively, as describedabove in connection with FIG. 5B, the UE 402, when in the full duplexmode, may transmit a first set of symbols and receive a second set ofsymbols, in a same frequency bandwidth, where the first set of symbolsand the second set of symbols are separated in time by less than a timethreshold. Additionally, or alternatively, as described above inconnection with FIG. 5C, the UE 402, when in the full duplex mode, maytransmit a first set of symbols in a first frequency bandwidth and,concurrently, receive a second set of symbols in a second frequencybandwidth, where the first frequency bandwidth and the second frequencybandwidth are separated in frequency by less than a frequency threshold.

As shown in connection with reference number 605, the gNB 404 maytransmit, and the UE 402 may receive, control information that indicatesat least two TCI states. In some aspects, a first TCI state of the atleast two TCI states may be associated with a half duplex mode of the UE402, and a second TCI state of the at least two TCI states may beassociated with the full duplex mode of the UE 402.

In some aspects, the control information may include a MAC-CE and/oranother control message. Additionally, or alternatively, the message mayinclude DCI and/or another signal including information indicating theat least two TCI states. In some aspects, the DCI may include a fieldthat indicates the first TCI state and/or the second TCI state. Forexample, the field may be a Transmission configuration indication field,as defined in 3GPP specifications and/or another standard.

In some aspects, the at least two TCI states may include a firstplurality of TCI states and a second plurality of TCI states. The firstplurality of TCI states may include the first TCI state and beassociated with the half duplex mode of the UE 402, and the secondplurality of TCI states may include the second TCI state and beassociated with the full duplex mode of the UE 402. In some aspects,when the control information includes DCI, a size of the field includedin the DCI, as described above, may be based at least in part on aquantity of the first plurality of TCI states and/or a quantity of thesecond plurality of TCI states. For example, the size of the fieldincluded in the DCI may be based at least in part on a larger of thequantity of the first plurality of TCI states and the quantity of thesecond plurality of TCI states.

Additionally, or alternatively, the first TCI state and the second TCIstate may be associated with a common set of resources. For example, thecommon set of resources may include a control resource set (CORESET).Accordingly, the first TCI state and the second TCI state may both beassociated with a same CORESET.

In some aspects, the at least two TCI states may further include a thirdTCI state associated with the half duplex mode of the UE 402 and afourth TCI state associated with the full duplex mode of the UE 402. Forexample, the message may indicate the third TCI state and the fourth TCIstate in addition to the first TCI state and the second TCI state. Insome aspects, the third TCI state and the fourth TCI state may beassociated with a different set of resources than the common set ofresources. For example, the third TCI state and the fourth TCI state mayboth be associated with a different CORESET than the first TCI state andthe second TCI state.

Additionally, or alternatively, the first TCI state and the second TCIstate may be associated with a common TRP of a plurality of TRPs of thegNB 404. For example, the first TCI state and the second TCI state mayboth be associated with the common TRP. Accordingly, in some aspects,the third TCI state and the fourth TCI state (e.g., as described above)may be associated with a different TRP of the plurality of TRPs of thegNB 404. For example, the third TCI state and the fourth TCI state mayboth be associated with a different TRP than the first TCI state and thesecond TCI state.

As shown in connection with reference number 610, the UE 402 may selecta TCI state from the at least two TCI states indicated by the controlinformation. For example, the UE 402 may select one of the at least twoTCI states based at least in part on determining whether an expecteddownlink transmission is associated with the full duplex mode of the UE402 or the half duplex mode of the UE 402 and selecting the TCI stateassociated with the same mode.

As shown in connection with reference number 615, the gNB 404 maytransmit, and the UE 402 may receive, the downlink transmissionaccording to at least one of the first TCI state or the second TCIstate. In some aspects, the gNB 404 may transmit the downlinktransmission on a PDSCH, a PDCCH, and/or another downlink channel.Accordingly, the downlink transmission may include a PDSCH message, aPDCCH message, and/or another downlink message.

In some aspects, symbols associated with the full duplex mode of the UE402 may overlap, in time and/or in frequency, with one or more symbolsused for uplink communications from the UE 402, and the symbolsassociated with the half duplex mode of the UE 402 may not overlap withone or more symbols used for uplink communications from the UE 402. Insome aspects, when the downlink transmission includes symbols associatedwith the half duplex mode of the UE 402, the downlink transmission maynot include symbols associated with the full duplex mode of the UE 402.Similarly, when the downlink transmission includes symbols associatedwith the full duplex mode of the UE 402, the downlink transmission maynot include symbols associated with the half duplex mode of the UE 402.Accordingly, in some aspects the gNB 404 may avoid combining, in a samedownlink transmission, symbols associated with the half duplex mode ofthe UE 402 with symbols associated with the full duplex mode of the UE402.

As an alternative, the downlink transmission may include a first set ofsymbols associated with the half duplex mode of the UE 402 and a secondset of symbols associated with the full duplex mode of the UE 402. Asexplained above, the first set of symbols may overlap, in time and/or infrequency, with one or more symbols used for uplink communications fromthe UE 402, and the second set of symbols may not overlap with one ormore symbols used for uplink communications from the UE 402. In someaspects, the gNB 404 may transmit, and the UE 402 may receive, thedownlink transmission according to the first TCI state or the second TCIstate and not according to a combination of the first TCI state and thesecond TCI state. For example, the UE 402 may apply one or more rules(e.g., preconfigured and/or based at least in part on the controlinformation) to select a TCI state associated with the full duplex modeof the UE 402 (such as the second TCI state) or a TCI state associatedwith the half duplex mode of the UE 402 (such as the first TCI state)when a downlink communications includes a combination of half duplexsymbols and full duplex symbols. As an alternative, the gNB 404 maytransmit, and the UE 402 may receive, the downlink transmissionaccording to a combination of the first TCI state and the second TCIstate.

By transmitting the downlink transmission as described in connectionwith FIG. 6, the gNB 404 may improve the quality and/or reliability ofthe transmission. Additionally, on account of the improved qualityand/or reliability, the gNB 404 can reduce a possible need to retransmitthe downlink transmission, which conserves network and processingresources at the gNB 404 and at the UE 402.

As indicated above, FIG. 6 is provided as an example. Other examples maydiffer from what is described with respect to FIG. 6.

FIG. 7 is a diagram illustrating an example process 700 performed, forexample, by a UE, in accordance with the present disclosure. Exampleprocess 700 is an example where the UE (e.g., UE 402 and/or UE 120)performs operations associated with activating and using transmissionconfigurations for a full duplex mode.

As shown in FIG. 7, in some aspects, process 700 may include receiving,from a base station (e.g., gNB 404 and/or base station 110), controlinformation that indicates at least two TCI states (block 710). Forexample, the UE (e.g., using one or more of antenna 252, demodulator254, MIMO detector 256, receive processor 258, transmit processor 264,controller/processor 280, and/or memory 282) may receive, from the basestation, the control information that indicates the at least two TCIstates, as described above. In some aspects, a first TCI state of the atleast two TCI states is associated with a half duplex mode of the UE,and a second TCI state of the at least two TCI states is associated witha full duplex mode of the UE.

As further shown in FIG. 7, in some aspects, process 700 may includereceiving, from the base station, a downlink transmission according toat least one of the first TCI state or the second TCI state (block 720).For example, the UE (e.g., using one or more of antenna 252, demodulator254, MIMO detector 256, receive processor 258, transmit processor 264,controller/processor 280, and/or memory 282) may receive, from the basestation, the downlink transmission according to at least one of thefirst TCI state or the second TCI state, as described above.

Process 700 may include additional aspects, such as any single aspect orany combination of aspects described below and/or in connection with oneor more other processes described elsewhere herein.

In a first aspect, the first TCI state and the second TCI state areassociated with a common set of resources.

In a second aspect, alone or in combination with the first aspect, thecommon set of resources includes a CORESET.

In a third aspect, alone or in combination with one or more of the firstand second aspects, the at least two TCI states further include a thirdTCI state associated with the half duplex mode of the UE and a fourthTCI state associated with the full duplex mode of the UE, and the thirdTCI state and the fourth TCI state are associated with a different setof resources than the common set of resources.

In a fourth aspect, alone or in combination with one or more of thefirst through third aspects, the first TCI state and the second TCIstate are associated with a common TRP of a plurality of TRPs of thebase station.

In a fifth aspect, alone or in combination with one or more of the firstthrough fourth aspects, the at least two TCI states further include athird TCI state associated with the half duplex mode of the UE and afourth TCI state associated with the full duplex mode of the UE, and thethird TCI state and the fourth TCI state are associated with a differentTRP, than the common TRP, of the plurality of TRPs of the base station.

In a sixth aspect, alone or in combination with one or more of the firstthrough fifth aspects, the downlink transmission includes a PDCCHmessage.

In a seventh aspect, alone or in combination with one or more of thefirst through sixth aspects, when the downlink transmission includessymbols associated with the half duplex mode of the UE, the downlinktransmission does not include symbols associated with the full duplexmode of the UE, and, when the downlink transmission includes symbolsassociated with the full duplex mode of the UE, the downlinktransmission does not include symbols associated with the half duplexmode of the UE.

In an eighth aspect, alone or in combination with one or more of thefirst through seventh aspects, the downlink transmission includes afirst set of symbols associated with the half duplex mode of the UE anda second set of symbols associated with the full duplex mode of the UE.

In a ninth aspect, alone or in combination with one or more of the firstthrough eighth aspects, the downlink transmission is received accordingto the first TCI state or the second TCI state, and the downlinktransmission is not received according to a combination of the first TCIstate and the second TCI state.

In a tenth aspect, alone or in combination with one or more of the firstthrough ninth aspects, the downlink transmission is received accordingto a combination of the first TCI state and the second TCI state.

In an eleventh aspect, alone or in combination with one or more of thefirst through tenth aspects, the at least two TCI states include a firstplurality of TCI states and a second plurality of TCI states, whereinthe first plurality of TCI states include the first TCI state and areassociated with the half duplex mode of the UE, and the second pluralityof TCI states include the second TCI state and are associated with thefull duplex mode of the UE.

In a twelfth aspect, alone or in combination with one or more of thefirst through eleventh aspects, the downlink transmission includes aPDSCH message.

In a thirteenth aspect, alone or in combination with one or more of thefirst through twelfth aspects, the control information includes aMAC-CE.

In a fourteenth aspect, alone or in combination with one or more of thefirst through thirteenth aspects, the control information includes DCI.

In a fifteenth aspect, alone or in combination with one or more of thefirst through fourteenth aspects, the DCI includes a field thatindicates the first TCI state or the second TCI state.

In a sixteenth aspect, alone or in combination with one or more of thefirst through fifteenth aspects, a size of the field included in the DCIis based at least in part on a larger of a quantity of the firstplurality of TCI states or a quantity of the second plurality of TCIstates.

In a seventeenth aspect, alone or in combination with one or more of thefirst through sixteenth aspects, the UE, when in the full duplex mode,transmits and receives, in a same frequency bandwidth, concurrently.

In an eighteenth aspect, alone or in combination with one or more of thefirst through seventeenth aspects, the UE, when in the full duplex mode,transmits a first set of symbols and receives a second set of symbols,in a same frequency bandwidth, wherein the first set of symbols and thesecond set of symbols are separated in time by less than a threshold.

In a nineteenth aspect, alone or in combination with one or more of thefirst through eighteenth aspects, the UE, when in the full duplex mode,transmits a first set of symbols in a first frequency bandwidth and,concurrently, receives a second set of symbols in a second frequencybandwidth, wherein the first frequency bandwidth and the secondfrequency bandwidth are separated in frequency by less than a threshold.

Although FIG. 7 shows example blocks of process 700, in some aspects,process 700 may include additional blocks, fewer blocks, differentblocks, or differently arranged blocks than those depicted in FIG. 7.Additionally, or alternatively, two or more of the blocks of process 700may be performed in parallel.

FIG. 8 is a diagram illustrating an example process 800 performed, forexample, by a base station, in accordance with the present disclosure.Example process 800 is an example where the base station (e.g., gNB 404and/or base station 110) performs operations associated with activatingand using transmission configurations for a full duplex mode.

As shown in FIG. 8, in some aspects, process 800 may includetransmitting, to a UE (e.g., UE 402 and/or UE 120), control informationthat indicates at least two TCI states (block 810). For example, thebase station (e.g., using one or more of transmit processor 220, TX MIMOprocessor 230, modulator 232, antenna 234, controller/processor 240,memory 242, and/or scheduler 246) may transmit, to the UE, the controlinformation that indicates the at least two TCI states, as describedabove. In some aspects, a first TCI state of the at least two TCI statesis associated with a half duplex mode of the UE, and a second TCI stateof the at least two TCI states is associated with a full duplex mode ofthe UE.

As further shown in FIG. 8, in some aspects, process 800 may includetransmitting, to the UE, a downlink transmission according to the firstTCI state or the second TCI state (block 820). For example, the basestation (e.g., using one or more of transmit processor 220, TX MIMOprocessor 230, modulator 232, antenna 234, controller/processor 240,memory 242, and/or scheduler 246) may transmit, to the UE, the downlinktransmission according to the first TCI state or the second TCI state,as described above.

Process 800 may include additional aspects, such as any single aspect orany combination of aspects described below and/or in connection with oneor more other processes described elsewhere herein.

In a first aspect, the first TCI state and the second TCI state areassociated with a common set of resources.

In a second aspect, alone or in combination with the first aspect, thecommon set of resources includes a CORESET.

In a third aspect, alone or in combination with one or more of the firstand second aspects, the at least two TCI states further include a thirdTCI state associated with the half duplex mode of the UE and a fourthTCI state associated with the full duplex mode of the UE, and the thirdTCI state and the fourth TCI state are associated with a different setof resources than the common set of resources.

In a fourth aspect, alone or in combination with one or more of thefirst through third aspects, the first TCI state and the second TCIstate are associated with a common TRP of a plurality of TRPs of thebase station.

In a fifth aspect, alone or in combination with one or more of the firstthrough fourth aspects, the at least two TCI states further include athird TCI state associated with the half duplex mode of the UE and afourth TCI state associated with the full duplex mode of the UE, and thethird TCI state and the fourth TCI state are associated with a differentTRP, than the common TRP, of the plurality of TRPs of the base station.

In a sixth aspect, alone or in combination with one or more of the firstthrough fifth aspects, the downlink transmission includes a PDCCHmessage.

In a seventh aspect, alone or in combination with one or more of thefirst through sixth aspects, when the downlink transmission includessymbols associated with the half duplex mode of the UE, the downlinktransmission does not include symbols associated with the full duplexmode of the UE, and, when the downlink transmission includes symbolsassociated with the full duplex mode of the UE, the downlinktransmission does not include symbols associated with the half duplexmode of the UE.

In an eighth aspect, alone or in combination with one or more of thefirst through seventh aspects, the downlink transmission includes afirst set of symbols associated with the half duplex mode of the UE anda second set of symbols associated with the full duplex mode of the UE.

In a ninth aspect, alone or in combination with one or more of the firstthrough eighth aspects, the downlink transmission is transmittedaccording to the first TCI state or the second TCI state, and thedownlink transmission is not transmitted according to a combination ofthe first TCI state and the second TCI state.

In a tenth aspect, alone or in combination with one or more of the firstthrough ninth aspects, the downlink transmission is transmittedaccording to a combination of the first TCI state and the second TCIstate.

In an eleventh aspect, alone or in combination with one or more of thefirst through tenth aspects, the at least two TCI states include a firstplurality of TCI states and a second plurality of TCI states, whereinthe first plurality of TCI states include the first TCI state and areassociated with the half duplex mode of the UE, and the second pluralityof TCI states include the second TCI state and are associated with thefull duplex mode of the UE.

In a twelfth aspect, alone or in combination with one or more of thefirst through eleventh aspects, the downlink transmission includes aPDSCH message.

In a thirteenth aspect, alone or in combination with one or more of thefirst through twelfth aspects, the control information includes aMAC-CE.

In a fourteenth aspect, alone or in combination with one or more of thefirst through thirteenth aspects, the control information includes DCI.

In a fifteenth aspect, alone or in combination with one or more of thefirst through fourteenth aspects, the DCI includes a field thatindicates the first TCI state or the second TCI state.

In a sixteenth aspect, alone or in combination with one or more of thefirst through fifteenth aspects, a size of the field included in the DCIis based at least in part on a larger of a quantity of the firstplurality of TCI states or a quantity of the second plurality of TCIstates.

In a seventeenth aspect, alone or in combination with one or more of thefirst through sixteenth aspects, the UE, when in the full duplex mode,transmits and receives, in a same frequency bandwidth, concurrently.

In an eighteenth aspect, alone or in combination with one or more of thefirst through seventeenth aspects, the UE, when in the full duplex mode,transmits a first set of symbols and receives a second set of symbols,in a same frequency bandwidth, wherein the first set of symbols and thesecond set of symbols are separated in time by less than a threshold.

In a nineteenth aspect, alone or in combination with one or more of thefirst through eighteenth aspects, the UE, when in the full duplex mode,transmits a first set of symbols in a first frequency bandwidth and,concurrently, receives a second set of symbols in a second frequencybandwidth, wherein the first frequency bandwidth and the secondfrequency bandwidth are separated in frequency by less than a threshold.

Although FIG. 8 shows example blocks of process 800, in some aspects,process 800 may include additional blocks, fewer blocks, differentblocks, or differently arranged blocks than those depicted in FIG. 8.Additionally, or alternatively, two or more of the blocks of process 800may be performed in parallel.

The following provides an overview of some Aspects of the presentdisclosure:

Aspect 1: A method of wireless communication performed by a userequipment (UE), comprising: receiving, from a base station, controlinformation that indicates at least two transmission configurationindicator (TCI) states, wherein a first TCI state of the at least twoTCI states is associated with a half duplex mode of the UE, and a secondTCI state of the at least two TCI states is associated with a fullduplex mode of the UE; and receiving, from the base station, a downlinktransmission according to at least one of the first TCI state or thesecond TCI state.

Aspect 2: The method of Aspect 1, wherein the first TCI state and thesecond TCI state are associated with a common set of resources.

Aspect 3: The method of Aspect 2, wherein the common set of resourcesincludes a control resource set.

Aspect 4: The method of any of Aspects 2 through 3, wherein the at leasttwo TCI states further include a third TCI state associated with thehalf duplex mode of the UE and a fourth TCI state associated with thefull duplex mode of the UE, wherein the third TCI state and the fourthTCI state are associated with a different set of resources than thecommon set of resources.

Aspect 5: The method of any of Aspects 1 through 4, wherein the firstTCI state and the second TCI state are associated with a commontransmit-receive point (TRP) of a plurality of TRPs of the base station.

Aspect 6: The method of Aspect 5, wherein the at least two TCI statesfurther include a third TCI state associated with the half duplex modeof the UE and a fourth TCI state associated with the full duplex mode ofthe UE, wherein the third TCI state and the fourth TCI state areassociated with a different TRP, than the common TRP, of the pluralityof TRPs of the base station.

Aspect 7: The method of any of Aspects 1 through 6, wherein the downlinktransmission includes a physical downlink control channel message.

Aspect 8: The method of any of Aspects 1 through 7, wherein, when thedownlink transmission includes symbols associated with the half duplexmode of the UE, the downlink transmission does not include symbolsassociated with the full duplex mode of the UE, and wherein, when thedownlink transmission includes symbols associated with the full duplexmode of the UE, the downlink transmission does not include symbolsassociated with the half duplex mode of the UE.

Aspect 9: The method of any of Aspects 1 through 7, wherein the downlinktransmission includes a first set of symbols associated with the halfduplex mode of the UE and a second set of symbols associated with thefull duplex mode of the UE.

Aspect 10: The method of Aspect 9, wherein the downlink transmission isreceived according to the first TCI state or the second TCI state, andwherein the downlink transmission is not received according to acombination of the first TCI state and the second TCI state.

Aspect 11: The method of Aspect 9, wherein the downlink transmission isreceived according to a combination of the first TCI state and thesecond TCI state.

Aspect 12: The method of any of Aspects 1 through 11, wherein the atleast two TCI states include a first plurality of TCI states and asecond plurality of TCI states, wherein the first plurality of TCIstates include the first TCI state and are associated with the halfduplex mode of the UE, and the second plurality of TCI states includethe second TCI state and are associated with the full duplex mode of theUE.

Aspect 13: The method of any of Aspects 1 though 12, wherein thedownlink transmission includes a physical downlink shared channelmessage.

Aspect 14: The method of any of Aspects 1 through 13, wherein thecontrol information includes a medium access control layer controlelement.

Aspect 15: The method of any of Aspects 1 through 14, wherein thecontrol information includes downlink control information (DCI).

Aspect 16: The method of Aspect 15, wherein the DCI includes a fieldthat indicates the first TCI state or the second TCI state.

Aspect 17: The method of Aspect 16, wherein the at least two TCI statesinclude a first plurality of TCI states and a second plurality of TCIstates, wherein the first plurality of TCI states include the first TCIstate and are associated with the half duplex mode of the UE, and thesecond plurality of TCI states include the second TCI state and areassociated with the full duplex mode of the UE, and wherein a size ofthe field included in the DCI is based at least in part on a larger of aquantity of the first plurality of TCI states or a quantity of thesecond plurality of TCI states.

Aspect 18: The method of any of Aspects 1 through 17, wherein the UE,when in the full duplex mode, transmits and receives, in a samefrequency bandwidth, concurrently.

Aspect 19: The method of any of Aspects 1 through 17, wherein the UE,when in the full duplex mode, transmits a first set of symbols andreceives a second set of symbols, in a same frequency bandwidth, whereinthe first set of symbols and the second set of symbols are separated intime by less than a threshold.

Aspect 20: The method of any of Aspects 1 through 17, wherein the UE,when in the full duplex mode, transmits a first set of symbols in afirst frequency bandwidth and, concurrently, receives a second set ofsymbols in a second frequency bandwidth, wherein the first frequencybandwidth and the second frequency bandwidth are separated in frequencyby less than a threshold.

Aspect 21: A method of wireless communication performed by a basestation, comprising: transmitting, to a user equipment (UE), controlinformation that indicates at least two TCI states, wherein a first TCIstate of the at least two TCI states is associated with a half duplexmode of the UE, and a second TCI state of the at least two TCI states isassociated with a full duplex mode of the UE; and transmitting, to theUE, a downlink transmission according to the first TCI state or thesecond TCI state.

Aspect 22: The method of Aspect 21, wherein the first TCI state and thesecond TCI state are associated with a common set of resources.

Aspect 23: The method of Aspect 22, wherein the common set of resourcesincludes a control resource set.

Aspect 24: The method of any of Aspects 22 through 23, wherein the atleast two TCI states further include a third TCI state associated withthe half duplex mode of the UE and a fourth TCI state associated withthe full duplex mode of the UE, wherein the third TCI state and thefourth TCI state are associated with a different set of resources thanthe common set of resources.

Aspect 25: The method of any of Aspects 21 through 24. wherein the firstTCI state and the second TCI state are associated with a commontransmit-receive point (TRP) of a plurality of TRPs of the base station.

Aspect 26: The method of Aspect 25, wherein the at least two TCI statesfurther include a third TCI state associated with the half duplex modeof the UE and a fourth TCI state associated with the full duplex mode ofthe UE, wherein the third TCI state and the fourth TCI state areassociated with a different TRP, than the common TRP, of the pluralityof TRPs of the base station.

Aspect 27: The method of any of Aspects 21 through 26, wherein thedownlink transmission includes a physical downlink control channelmessage.

Aspect 28: The method of any of Aspects 21 through 27, wherein, when thedownlink transmission includes symbols associated with the half duplexmode of the UE, the downlink transmission does not include symbolsassociated with the full duplex mode of the UE, and wherein, when thedownlink transmission includes symbols associated with the full duplexmode of the UE, the downlink transmission does not include symbolsassociated with the half duplex mode of the UE.

Aspect 29: The method of any of Aspects 21 through 27, wherein thedownlink transmission includes a first set of symbols associated withthe half duplex mode of the UE and a second set of symbols associatedwith the full duplex mode of the UE.

Aspect 30: The method of Aspect 29, wherein the downlink transmission istransmitted according to the first TCI state or the second TCI state,and wherein the downlink transmission is not transmitted according to acombination of the first TCI state and the second TCI state.

Aspect 31: The method of Aspect 29, wherein the downlink transmission istransmitted according to a combination of the first TCI state and thesecond TCI state.

Aspect 32: The method of any of Aspects 21 through 31, wherein the atleast two TCI states include a first plurality of TCI states and asecond plurality of TCI states, wherein the first plurality of TCIstates include the first TCI state and are associated with the halfduplex mode of the UE, and the second plurality of TCI states includethe second TCI state and are associated with the full duplex mode of theUE.

Aspect 33: The method of any of Aspects 21 through 32, wherein thedownlink transmission includes a physical downlink shared channelmessage.

Aspect 34: The method of any of Aspects 21 through 33, wherein thecontrol information includes a media access control layer controlelement.

Aspect 35: The method of any of Aspects 21 through 34, wherein thecontrol information includes downlink control information (DCI).

Aspect 36: The method of Aspect 35, wherein the DCI includes a fieldthat indicates the first TCI state or the second TCI state.

Aspect 37: The method of Aspect 36, wherein the at least two TCI statesinclude a first plurality of TCI states and a second plurality of TCIstates, wherein the first plurality of TCI states include the first TCIstate and are associated with the half duplex mode of the UE, and thesecond plurality of TCI states include the second TCI state and areassociated with the full duplex mode of the UE, and wherein a size ofthe field included in the DCI is based at least in part on a larger of aquantity of the first plurality of TCI states or a quantity of thesecond plurality of TCI states.

Aspect 38: The method of any of Aspects 21 through 37, wherein the UE,when in the full duplex mode, transmits and receives, in a samefrequency bandwidth, concurrently.

Aspect 39: The method of any of Aspects 21 through 37, wherein the UE,when in the full duplex mode, transmits a first set of symbols andreceives a second set of symbols, in a same frequency bandwidth, whereinthe first set of symbols and the second set of symbols are separated intime by less than a threshold.

Aspect 40: The method of any of Aspects 21 through 37, wherein the UE,when in the full duplex mode, transmits a first set of symbols in afirst frequency bandwidth and, concurrently, receives a second set ofsymbols in a second frequency bandwidth, wherein the first frequencybandwidth and the second frequency bandwidth are separated in frequencyby less than a threshold.

Aspect 41: An apparatus for wireless communication at a device,comprising a processor; memory coupled with the processor; andinstructions stored in the memory and executable by the processor tocause the apparatus to perform the method of one or more Aspects ofAspects 1-20.

Aspect 42: A device for wireless communication, comprising a memory andone or more processors coupled to the memory, the memory and the one ormore processors configured to perform the method of one or more Aspectsof Aspects 1-20.

Aspect 43: An apparatus for wireless communication, comprising at leastone means for performing the method of one or more Aspects of Aspects1-20.

Aspect 44: A non-transitory computer-readable medium storing code forwireless communication, the code comprising instructions executable by aprocessor to perform the method of one or more Aspects of Aspects 1-20.

Aspect 45: A non-transitory computer-readable medium storing a set ofinstructions for wireless communication, the set of instructionscomprising one or more instructions that, when executed by one or moreprocessors of a device, cause the device to perform the method of one ormore Aspects of Aspects 1-20.

Aspect 46: An apparatus for wireless communication at a device,comprising a processor; memory coupled with the processor; andinstructions stored in the memory and executable by the processor tocause the apparatus to perform the method of one or more Aspects ofAspects 21-40.

Aspect 47: A device for wireless communication, comprising a memory andone or more processors coupled to the memory, the memory and the one ormore processors configured to perform the method of one or more Aspectsof Aspects 21-40.

Aspect 48: An apparatus for wireless communication, comprising at leastone means for performing the method of one or more Aspects of Aspects21-40.

Aspect 49: A non-transitory computer-readable medium storing code forwireless communication, the code comprising instructions executable by aprocessor to perform the method of one or more Aspects of Aspects 21-40.

Aspect 50: A non-transitory computer-readable medium storing a set ofinstructions for wireless communication, the set of instructionscomprising one or more instructions that, when executed by one or moreprocessors of a device, cause the device to perform the method of one ormore Aspects of Aspects 21-40.

The foregoing disclosure provides illustration and description, but isnot intended to be exhaustive or to limit the aspects to the preciseforms disclosed. Modifications and variations may be made in light ofthe above disclosure or may be acquired from practice of the aspects.

As used herein, the term “component” is intended to be broadly construedas hardware and/or a combination of hardware and software. “Software”shall be construed broadly to mean instructions, instruction sets, code,code segments, program code, programs, subprograms, software modules,applications, software applications, software packages, routines,subroutines, objects, executables, threads of execution, procedures,and/or functions, among other examples, whether referred to as software,firmware, middleware, microcode, hardware description language, orotherwise. As used herein, a processor is implemented in hardware and/ora combination of hardware and software. It will be apparent that systemsand/or methods described herein may be implemented in different forms ofhardware and/or a combination of hardware and software. The actualspecialized control hardware or software code used to implement thesesystems and/or methods is not limiting of the aspects. Thus, theoperation and behavior of the systems and/or methods were describedherein without reference to specific software code—it being understoodthat software and hardware can be designed to implement the systemsand/or methods based, at least in part, on the description herein.

As used herein, satisfying a threshold may, depending on the context,refer to a value being greater than the threshold, greater than or equalto the threshold, less than the threshold, less than or equal to thethreshold, equal to the threshold, not equal to the threshold, or thelike.

Even though particular combinations of features are recited in theclaims and/or disclosed in the specification, these combinations are notintended to limit the disclosure of various aspects. In fact, many ofthese features may be combined in ways not specifically recited in theclaims and/or disclosed in the specification. Although each dependentclaim listed below may directly depend on only one claim, the disclosureof various aspects includes each dependent claim in combination withevery other claim in the claim set. As used herein, a phrase referringto “at least one of” a list of items refers to any combination of thoseitems, including single members. As an example, “at least one of: a, b,or c” is intended to cover a, b, c, a-b, a-c, b-c, and a-b-c, as well asany combination with multiples of the same element (e.g., a-a, a-a-a,a-a-b, a-a-c, a-b-b, a-c-c, b-b, b-b-b, b-b-c, c-c, and c-c-c or anyother ordering of a, b, and c).

No element, act, or instruction used herein should be construed ascritical or essential unless explicitly described as such. Also, as usedherein, the articles “a” and “an” are intended to include one or moreitems and may be used interchangeably with “one or more.” Further, asused herein, the article “the” is intended to include one or more itemsreferenced in connection with the article “the” and may be usedinterchangeably with “the one or more.” Furthermore, as used herein, theterms “set” and “group” are intended to include one or more items (e.g.,related items, unrelated items, or a combination of related andunrelated items), and may be used interchangeably with “one or more.”Where only one item is intended, the phrase “only one” or similarlanguage is used. Also, as used herein, the terms “has,” “have,”“having,” or the like are intended to be open-ended terms. Further, thephrase “based on” is intended to mean “based, at least in part, on”unless explicitly stated otherwise. Also, as used herein, the term “or”is intended to be inclusive when used in a series and may be usedinterchangeably with “and/or,” unless explicitly stated otherwise (e.g.,if used in combination with “either” or “only one of”).

What is claimed is:
 1. A user equipment (UE) for wireless communication,comprising: a memory; and one or more processors coupled to the memory,the memory and the one or more processors configured to: receive, from abase station, control information that indicates at least twotransmission configuration indicator (TCI) states, wherein a first TCIstate of the at least two TCI states is associated with a half duplexmode of the UE, and a second TCI state of the at least two TCI states isassociated with a full duplex mode of the UE; and receive, from the basestation, a downlink transmission according to at least one of the firstTCI state or the second TCI state.
 2. The UE of claim 1, wherein thefirst TCI state and the second TCI state are associated with a commonset of resources.
 3. The UE of claim 2, wherein the common set ofresources includes a control resource set.
 4. The UE of claim 2, whereinthe at least two TCI states further include a third TCI state associatedwith the half duplex mode of the UE and a fourth TCI state associatedwith the full duplex mode of the UE, wherein the third TCI state and thefourth TCI state are associated with a different set of resources thanthe common set of resources.
 5. The UE of claim 1, wherein the first TCIstate and the second TCI state are associated with a commontransmit-receive point (TRP) of a plurality of TRPs of the base station.6. The UE of claim 5, wherein the at least two TCI states furtherinclude a third TCI state associated with the half duplex mode of the UEand a fourth TCI state associated with the full duplex mode of the UE,wherein the third TCI state and the fourth TCI state are associated witha different TRP, than the common TRP, of the plurality of TRPs of thebase station.
 7. The UE of claim 1, wherein the downlink transmissionincludes a physical downlink control channel message.
 8. The UE of claim1, wherein, when the downlink transmission includes symbols associatedwith the half duplex mode of the UE, the downlink transmission does notinclude symbols associated with the full duplex mode of the UE, andwherein, when the downlink transmission includes symbols associated withthe full duplex mode of the UE, the downlink transmission does notinclude symbols associated with the half duplex mode of the UE.
 9. TheUE of claim 1, wherein the downlink transmission includes a first set ofsymbols associated with the half duplex mode of the UE and a second setof symbols associated with the full duplex mode of the UE.
 10. The UE ofclaim 9, wherein the downlink transmission is received according to thefirst TCI state or the second TCI state, and wherein the downlinktransmission is not received according to a combination of the first TCIstate and the second TCI state.
 11. The UE of claim 9, wherein thedownlink transmission is received according to a combination of thefirst TCI state and the second TCI state.
 12. The UE of claim 1, whereinthe at least two TCI states include a first plurality of TCI states anda second plurality of TCI state, wherein the first plurality of TCIstates include the first TCI state and are associated with the halfduplex mode of the UE, and the second plurality of TCI states includethe second TCI state and are associated with the full duplex mode of theUE.
 13. The UE of claim 1, wherein the downlink transmission includes aphysical downlink shared channel message.
 14. The UE of claim 1, whereinthe control information includes a medium access control layer controlelement (MAC-CE).
 15. The UE of claim 1, wherein the control informationincludes downlink control information (DCI).
 16. The UE of claim 15,wherein the DCI includes a field that indicates the first TCI state orthe second TCI state.
 17. The UE of claim 16, wherein the at least twoTCI states include a first plurality of TCI states and a secondplurality of TCI states, wherein the first plurality of TCI statesinclude the first TCI state and are associated with the half duplex modeof the UE, and the second plurality of TCI states include the second TCIstate and are associated with the full duplex mode of the UE, andwherein a size of the field included in the DCI is based at least inpart on a larger of a quantity of the first plurality of TCI states or aquantity of the second plurality of TCI states.
 18. The UE of claim 1,wherein the UE, when in the full duplex mode, transmits and receives, ina same frequency bandwidth, concurrently.
 19. The UE of claim 1, whereinthe UE, when in the full duplex mode, transmits a first set of symbolsand receives a second set of symbols, in a same frequency bandwidth,wherein the first set of symbols and the second set of symbols areseparated in time by less than a threshold.
 20. The UE of claim 1,wherein the UE, when in the full duplex mode, transmits a first set ofsymbols in a first frequency bandwidth and, concurrently, receives asecond set of symbols in a second frequency bandwidth, wherein the firstfrequency bandwidth and the second frequency bandwidth are separated infrequency by less than a threshold.
 21. A base station for wirelesscommunication, comprising: a memory; and one or more processors coupledto the memory, the memory and the one or more processors configured to:transmit, to a user equipment (UE), control information that indicatesat least two transmission configuration indicator (TCI) states, whereina first TCI state of the at least two TCI states is associated with ahalf duplex mode of the UE, and a second TCI state of the at least twoTCI states is associated with a full duplex mode of the UE; andtransmit, to the UE, a downlink transmission according to the first TCIstate or the second TCI state.
 22. A method of wireless communicationperformed by a user equipment (UE), comprising: receiving, from a basestation, control information that indicates at least two transmissionconfiguration indicator (TCI) states, wherein a first TCI state of theat least two TCI states is associated with a half duplex mode of the UE,and a second TCI state of the at least two TCI states is associated witha full duplex mode of the UE; and receiving, from the base station, adownlink transmission according to at least one of the first TCI stateor the second TCI state.
 23. The method of claim 22, wherein the firstTCI state and the second TCI state are associated with a commontransmit-receive point (TRP) of a plurality of TRPs of the base station.24. The method of claim 23, wherein the at least two TCI states furtherinclude a third TCI state associated with the half duplex mode of the UEand a fourth TCI state associated with the full duplex mode of the UE,wherein the third TCI state and the fourth TCI state are associated witha different TRP, than the common TRP, of the plurality of TRPs of thebase station.
 25. The method of claim 22, wherein, when the downlinktransmission includes symbols associated with the half duplex mode ofthe UE, the downlink transmission does not include symbols associatedwith the full duplex mode of the UE, and wherein, when the downlinktransmission includes symbols associated with the full duplex mode ofthe UE, the downlink transmission does not include symbols associatedwith the half duplex mode of the UE.
 26. The method of claim 22, whereinthe downlink transmission includes a first set of symbols associatedwith the half duplex mode of the UE and a second set of symbolsassociated with the full duplex mode of the UE.
 27. The method of claim26, wherein the downlink transmission is received according to the firstTCI state or the second TCI state, and wherein the downlink transmissionis not received according to a combination of the first TCI state andthe second TCI state.
 28. The method of claim 26, wherein the downlinktransmission is received according to a combination of the first TCIstate and the second TCI state.
 29. The method of claim 22, wherein theat least two TCI states include a first plurality of TCI states and asecond plurality of TCI states, wherein the first plurality of TCIstates include the first TCI state and are associated with the halfduplex mode of the UE, and the second plurality of TCI states includethe second TCI state and are associated with the full duplex mode of theUE.
 30. A method of wireless communication performed by a base station,comprising: transmitting, to a user equipment (UE), control informationthat indicates at least two transmission configuration indicator (TCI)states, wherein a first TCI state of the at least two TCI states isassociated with a half duplex mode of the UE, and a second TCI state ofthe at least two TCI states is associated with a full duplex mode of theUE; and transmitting, to the UE, a downlink transmission according tothe first TCI state or the second TCI state.